The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Oct. 05, 2010

Filed:

Oct. 15, 2007
Applicants:

Stefano Piciaccia, Milan, IT;

Fabrizio Forghieri, Monza, IT;

Ornan Gerstel, Los Altos, CA (US);

Gabriele Maria Galimberti, Milan, IT;

Inventors:

Stefano Piciaccia, Milan, IT;

Fabrizio Forghieri, Monza, IT;

Ornan Gerstel, Los Altos, CA (US);

Gabriele Maria Galimberti, Milan, IT;

Assignee:

Cisco Technology, Inc., San Jose, CA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 21/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

In one embodiment, first optical signal can be generated at a first end of an optical fiber segment at a first time. The first optical signal can be detected at a second end of the optical fiber segment at a second time. A second optical signal can be generated at a second end of the optical fiber segment at a third time in response to the detection of the first optical signal. The second optical signal can be detected at the first end of the optical fiber segment at a fourth time. A length of the optical fiber segment can be determined based on a difference between the second time and the first time, a difference between the third time and the second time, and a difference between the fourth time and the third time.


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